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L. ONDERDONK.

SEWING MACHINE.

APPLICATION FILED APR. 4, 1914.

Patented Aug. 12, 1919.

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SEWING MACHINE.

APPLICATION FILED APR- 4.1914

Patented Aug. 12, 1919.

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L. ONDERDONK.

SEWING MACHINE.

APPLICATION FILED APR. 4. 1914.

Patented Aug. 12, 1919.

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L. ONDERDONK.

SEWING MACHINE.

APPLICATION FILED APR.4.1914.

Patented Au 12,1919? 5 SHEETS-SHEET 4 awe/whoa:

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SEWING MACHINE.

APPLICATION FILED APR.4.1914.

Patented Aug. 12, 1919.

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UNITED STATES PATENT OFFICE. I

LANSING ONDERDONK, on NEW YORK, N. .Y., ASSIGNOIB. o UNION sPEoIAMACHINE COMPANY, or CHICAGO, ILLINOIS, AconroRAr oN or ILLINOIS. v

SEWING-MACHINE.

Specification of Letters Patent. 7 Patented Aug. 12, 1919.

Application filed April 4, 1914., Serial No. 829,506.

To all whom it may concern:

Be it known that I, LANSING ONDERDONK, a citizen of the United States,residing at New York, in the county of New York, State of New York, haveinvented certain new and useful Improvements in Sewing-Machines, ofwhich the following is a description, reference being had to theaccompanying drawing and to the figures of reference marked thereon. V

The'inventlon relates to new and useful improvements in sewing machines,and moreespecially to sewing machines having a main feeding mechanlsmand an auxiliary feeding .member which operates upon the fabric inadvance of thestitching mechanism. 7

An object of the invention is to provide a sewing machine of the abovecharacter with means under the control of the operator for varying thefeeding action of the auX- iliary feeding member, and also means underthe control of the operator which is independent of the first namedmeans for rendering said auxiliary feeding member ineffective.

A further object of the invention is to provide a feeding mechanismhaving an auxiliary feeding member in advance of the stitchingmechanism, with a cooperating separating plate and presser foot, whichis yieldingly pressed into cooperative action with said auxiliaryfeeding member.

A further object of the invention is to provide an overseaming machinehaving overedge stitching implements, and an auxillary feeding mechanismoperating in advance of said overedge stitching mechanism to engage thunder face of the material and feed the same to said stitchingmechanism,

Fig. 2 is a vertical sectional view through the Work support, showingthe head of the machinein end elevation;

Fig. 3 is a horizontal sectional view with the work support removed, andshowing the feeding mechanism in plan View;

Fig. 7 is a detail in side elevation show ing the pre'sser foot, aportion of the. feed and work support, the separating plate and themeans for supporting the same, said separating plate being raised toinefiective posltlon Fig. 8 is a similar view, showing the s'epa-frating plate lowered for cooperation with the auxiliary feeding member.s

Fig. 9 is an enlarged detail, showing the separating'plate, the'pressefrfoot, the'feed ing members and the relation of the fabric thereto. i

Fig. 10 is a similar view with the separating plateraised out ofoperative position.

'The machine to which my invention has been applied, consists of a bedplate 1 having a standard 2' carrying an overhanging arm 3, in which aneedle bar 4: is reciprocated by a needle lever 5 connected with theneedle bar by a linkGLjThis needle lever is pivoted at 7 to thestandard2, and is oscillated by a link 8, which cooperatesrwith' aneccentric 011 the main shaft'9.

A work support 10 is mounted on said bed plate 1, and is provided with athroat plate 11 having suitable feed slots 12 and a needle throat 13.

The needle bar l carries a needle 14. A thread-carrying looper '15cooperates with. said needle beneath the work support. This looper 15 ismounted on a looper-carrier 16, oscillated by a link 17 connected to arock frame 1'8,which in turn is connected by a link 19 to the needlelever extension 20. Cooperating with said looper 15 and with the needleabovethe work support, is .a second thread-carrying looper 21, fixed toa short shaft mounted in suitable bearings 22. Said shaft also carriesan arm 23,'with which a link 24 is connected, and this link 24 in turncooperates with a crank 25 on the end of the main shaft 9.

This overedge stitching mechanism, consisting of the needle and the twothreadcarrying loopers, forms no part of the present invention, andfurther description thereof is not thought necessary.

The fabric is fed to the stitching mechanism and away from the stitchingmechanism after it is stitched by a main feed dog 26. This main feed dog26 is carried by-a main feed bar 27, (see Fig. The feed bar 27 ispivotally connected to a feed rocker 28. This feed rocker 28 is pivotedat 29 to the bed plate 1. An arm 30 is rigidly secured to the feed ofthe rocker by suitable screws 31, and this arm 30 cooperates with aneccentric strap 32, which in turn co operates with an eccentric on themain' shaft 8.

This eccentric on the main shaft oscillates the feed rocker 28 and movesthe main feed bar 27 back and forth. The main feed bar is raised andlowered in proper timed relation to its reciprocations by an eccentric33, carried by the main shaft 9, and engaging a hardened plate on thelower face of the main feed bar. A bracket 34 also attached to the mainfeed bar engages the lower face of the eccentric, so that the main feedbar is positively raised and lowered by this eccentric. This main feeddog 26, as clearly shown in Fig. 6 of the drawings, engages the fabricboth in advance and in rear of the needle.

Cooperating with said main feed dog is an an auxiliary feed dog 35. Thisauxiliary feed dog 35 is adjustably attached to a bracket 36, which iscarried by an auxiliary feed bar 37. The auxiliary feed bar 37 ismounted to slide in a bracket 38 attached to the main feed bar. Thisbracket is so constructed that the auxiliary feed bar only has anendwise movement relative to the main feed bar.

In other words, the auxiliary feed bar moves up and down with the mainfeed bar, but is moved back and forth relative to the main feed bar byan indirect connection with the feed rocker 28.

Mounted on the feed rocker 28 is an up wardly extending bracket 39,formed with a segmental slot 40. The auxiliary feed bar 37 has anupwardly projecting perforated lug 41. A link 42 is pivoted to this lug41, and is also pivoted to a block adapted to slide in the segmentalslot 40. The sliding of the block in the segmental slot 40 varies thedistance of the pivotal connection of the link to the bracket 39 fromthe pivotal support of the bracket. When this block is raised in theslot and moved a greater distance away from the pivotal point 29 of thepoint 29 and the point of attachment of the main feed bar to said feedrocker, and, therefore, the main feed bar and auxiliary feed bar willmove back and forth substantially in unison.

This shifting of the link 42 in the seg-' mental slot 40 provides meansfor varying the throw of the auxiliary feed dog 35. Said link is shiftedby an arm 43 connected by a link 44 to the sliding block, so that whensaid arm 43 is raised, the'block will be raised in the segmental slotand when the arm 43 is lowered, then said block will be lowered in theslot.

The arm 43 is attached'to a shaft 45 mounted in suitable bearings in thebed plate 1. This shaft, as clearly shown in Fig. 3, extends to a pointadjacent the standard 2, and carries an arm 46 which is connected with asuitable treadle or knee shift, so the operator may at will oscillatethe shaft 45,

and without stopping the action of the throw of the auxiliary feed dog,without stopping the stitching mechanism, per 86, also form no part ofthe present invention, but are shown, described and claimed in theapplication of James R. Mofiatt, Serial No. 703,650, filed June 14th,1912.

Cooperating with the main feed dog 26 is a presser foot 49. This presserfoot 49 is carried by a presser bar 50 mounted to slide in theoverhanging arm and spring-pressed against the work support by the usualleaf spring 51. The presser foot is pivoted at 52 to its supportingshank, and a spring 53 normally presses the outer free end of the footagainst the material. Said presser foot is provided with a yielding rib54, pivoted at 55 to the presser foot, and located in a slot in thepresser foot extending in the line Located in advance of the 'presserfoot is a combined separating plate and auxiliary presser foot 59. 7This separating plate cooperates with the auxihary feed dog alone.

"Said plate is attached to an arm 60, fixed to a shaft 61, mounted in abracket 62 fixed to the upper face of the work support at one side ofthe line of feed. A collar 63 isattached to the shaft at one side of thebracket 62, and a depending arm 64 is attached to the shaft at the otherside of said bracket. The collar and the depending arm prevent the shaftfrom moving endwise in the bracket. The arm 60 is adjustably attached tothe shaft 61 by suitable set screws 65.

A spring 66 engages at one end the depending arm 64 on the end of theshaft 60, and at its other end bears against a project ing lug 67 fixedto the work support. This spring normally tends to swing the arm 64 soas to yieldingly press the separating plate 59 against the worksupport'and in contact with the auxiliary feed dog.

When it is desired to ruffle or gather a single ply of fabric, it isinserted in the machine underneath this auxiliary presser foot 59, whichyieldingly presses the same against the work support. The auxiliary feeddog is set so as to have a differential feeding movement, and thisauxiliary feed dog will engage the fabric, press against the same by theauxiliary presser foot, and will gather or ruffle the same and feed itunderneath the main presser foot, where it 'is engaged by the main feeddog and conveyed to the stitching mechanism.

When it is desired to ruffle or gather a lower ply of fabric and stitchthe same to an upper ply of fabric which is not to be ruffled orgathered, then the upper ply is fed over the top of said plate 59, whichbe-' comes a separating plate, separating the two plies of fabric andpreventing theauxiliary feed dog from engaging said upper ply.-

While I have referred to the action of the auxiliary feeding member as aruflling or gathering action, it will be understood that the purpose ofthis feeding member depends upon the amount of differential movementgiven thereto. If the differential movement is considerable, then thefabric may be ruflled, while if the feeding action is less, then thefabric may be only slightly gathered or fulled as it is fed to thestitching mechanism.

It is often desirable to feed and stitch a knitted or elastic fabric toa non-elastic fabric. The operation of the feeding elements upon theelastic fabric sometimes stretches the same. With the above describedmechanism the auxiliary feed dog may be given just sufficient throw .togather the elastic material fed underneath the separating plate, so asto make up for any stretching action which may occur thereon, during themanipulation of the same, and thereby said elastic material may be fedand stitched to the non-elastic strip, which is fed over the separatingplate without any undue stretching of the same.

In order to facilitate the insertion of the material in the machine, Ihave provided a cam lever 68, pivoted to the work support at 69. Thiscam lever is formed with a cam end 70, adapted to engage the dependingarm 64, and is'also provided with an out wardly extending handle 71.When the cam lever-68 is in the position shown in Fig. 8, the cam end 70thereof is outof engagement with the depending arm 64:, and the spring66 performs its normal action of yieldingly pressing the separatingplate into cooperation with the auxiliary feed dog.- When, however, saidcam lever 68 is swung to the position shown in Fig; 7 or the positionshown in Fig. 6, when the arm 64 is moved toward the lug 67, compressingthe spring 66 and raising the separating plate from the auxiliaryfeeddog. By this movement of the separating plate the same israised soas to permit the ready insertion of the lower ply of material underneaththe same. v I am able by this movement of the separating plate toaccomplish another: and important function, which isthe rendering of theauxiliary feed dog ineffective. It-is well understood that when a feeddog moves up ward through a'feed slot into engagement with the material,some cooperative member is necessary to press the material against saidfeed dog, in order to secure a feeding action thereof. When theseparating plate is raised from cooperative relation to the aux iliaryfeed dog, then there is nothing to hold the material against this feeddog, and the feed dog will move back and forth without 7 cooperativerelation with. the auxiliary feed 7 dog.

The work support 10 is provided with a movable extension 7 2. Thismovable extension is pivoted to the under side of the work support, andcarries the bracket 62 which supports the separating plate and the controlling devices therefor. The extens1on 72 may be moved away from thestitching mechanism, and when moved into normal position may beyieldingly held therein by any suitable mechanism. This extension isshown more fully in my prior Patent No. 962,97, granted June 28th,1910'.

The machine to which my invention has been applied is a machine of theoveredging type, wherein thread-carrying implements move around the edgeof the material. These thread-carrying implements are guarded andprotected by a covered plate 7 3. lrVhen it is desired to gain access tothe thread-carrying implements for threading the same, the extension 72is swung away from. the work support, carrying with. it the supportingplate, and this gives access to the cover plate, so it may be swung togive in turn access to the parts in rear of the same.

An edge guide 74 is adjustably attached to the work support by a screw75 passing through a slot in the shank of the guide, as clearly shown inFig. 6.

The present machine is also provided with a trimming mechanismconsisting of a stationary blade 76 and movable blade 7' 7, for trimmingand preparing the edge to be overstitched in advance of the stitchingmechanism. This trimming mechanism forms no part of the presentinvention, and further description thereof is not thought necessary.

By the above construction, wherein a separating plate is'yieldinglypressed into contact with the work support, I am able to obtain a moreeflicient gathering action of the auxiliary feed dog. When the auxiliary(feed dog moves above the plane of the work support, the fabric is atonce pressed against the yielding separating plate, which yields andallows the auxiliary feed dog to move slightly above the plane of thework support, maintaining its engagement with the fabric, and thisyielding plate will hold the fabric in engagement with the auxiliaryfeed dog until it has reached the complete end of its stroke and islowered beneath the plane of the work support. This will be apparentfrom Figs. 9 and 10 of the drawings, wherein the work support isindicated by the broken line zuw.

The operation of my device will be apparent from the above description.WVhen it is desired to stitch or overedge a single ply of material, andeither gather the same or feed the fabric so it will not be undulystretched, if it is an elastic one, then the ply is inserted underneaththe auxiliary separating and pressing plate, and the auxiliary feed doggiven sufficient differential throw to feed the fabric a little fasterthan the main feed dog receives and feeds the fabric to the stitchingmechanism.

If at any time it is desired to render the differential feedingmechanism ineifective, the presser plate may be quickly raised throughthe lever 68. On the other hand, if it is desired to vary thedifferential feeding movement of the auxiliary feed dog, this can bereadily done through the knee shift or foot treadle connected to thecontrolling lever 46. When it is desired to stitch two plies of materialtogether and gather the lower ply only, then the upper ply is fed overthe top of the separating plate 59, and the auxiliary feed dog will notengage the same.

It is obvious that minor changes in the details of construction andarrangement of parts may be made, without departing from the spirit ofthe invention, as set forth in the appended claims.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent, is

l. A sewing machine including in com- I foot coopera ing with said mainfeeding member, a yieldingly supported separating plate located whollyin front of the workengaging surface of the presser foot and cooperatingwith the auxiliary feeding memher, and means for raising said separatingplate, whereby said auxiliary feeding member is rendered ineffective,said separating plate being so constructed that the ply of fabric to begathered may be fed underneath the same while the ply to which thegathered fabric is stitched is fed over the same.

3. The combination of a work support, a

main feed dog, an auxiliary feed dog, means for raising and loweringsaid feed dog,

means for moving the main feed dog back 7 and forth, means for giving adifferential movement to the auxiliary feed dog, a presser footcooperating with said main feed dog, an auxiliary separating andpressing plate located wholly in front of the workengaging surface ofthe presser foot and cooperating with said auxiliary feed dog, a

bracket located at one side of the line of feed, a support carried bythe bracket and projecting over the work support across the line offeed, means for attaching said separating and pressing plate to saidsupport, a spring for normally pressing said separating plate againstthe work support, and means for raising said separating plate andholding the same raised, whereby the auxiliary feed dog may be renderedineffective.

4. The combination of a work support, a main feed dog, an auxiliary feeddog, means for raising and lowering said feed dogs, means for moving themain feed dog back and forth, means for giving a differential feedingmovement to said auxiliary feed dog, a presser foot cooperating withsaid main feed dog, a bracket attached to said work support at one sideof the line of feed, a shaft mounted in said bracket and proj ectingover the work support across the line of feed, an arm fixed to saidbracket, a presser plate attached to said arm and extending over saidauxiliary feed dog, a depending arm carried by said bracket, and aspring cooperating with the depending arm for normally pressing theplate against the work support.

5. The combination of a work support, a main feed dog, an auxiliary feeddog, means for raising and lowering said feed dogs, means for moving themain feed dog back and forth, means for giving a difierential feedingmovement to said auxiliary feed dog, a presser foot cooperating withsaid main feed dog, a bracket attached to said work support at one sideof the line of feed, a shaft mounted in said bracket and projecting overthe work support across the line of feed, an arm fixed to said bracket,a presser plate attached to said arm and extending over said auxiliaryfeed dog, a depending arm carried by said bracket, a spring cooperatingwith the depending arm for normally pressing the plate against the worksupport, a cam lever attached to the work support and adapted to engagesaid depending arm for raising said supporting plate, saidcam leverhaving means for holding the plate in raised position.

6. The combination of a work support, a needle and overedge stitchingimplements, a

cover plate for said overedge stitching implements, a main feed dog,means for operating the same, an auxiliary feed dog, means for givingsaid auxiliary feed dog differential feeding movements, a movableextension carried by said work support, and means mounted on saidextension and cooperating with said. auxiliary feed dog for pressing thefabric against the work support.

7. The combination of a work support, a

needle and overedge stitching implements, a cover plate for saidoveredge stitching im plements, a main feed dog, means for operating thesame, an auxiliary feed dog, means for giving said auxiliary feed dogdifferential feeding movements, a movable extension carried by said worksupport, a bracket carried by said extension, a support extending fromsaid bracket overthe work support and across the line of feed, aseparating plate fixed to said support and cooperating with saidauxiliary feed dog, and means for yieldingly pressing said separatingplate against the work support.

8. The combination of a work support, a needle and overedge stitchingimplements, a cover plate for said overedge stitching implements, a mainfeed dog, means for oper ating the same, an auxiliary feed dog, meansfor giving said auxiliary feed dog diflerential feeding movements, amovable extension carried by said work support, a bracket carried bysaid extension, a support extending from said bracket over the worksupport and across the line of feed, a separating plate fixed to saidsupport and cooperating with said auxiliary feed dog, means foryieldingly pressing said separating plate against the work support, acam lever mounted on said extension and adapted to, move said supportfor raising the separating plate from the auxiliary feed dog.

In testimony whereof I affix my signature in the presence of twowitnesses.

LANSING ONDERDONK.

Witnesses RANDOLPH S. OSWALD, J. H. HOWELL.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

